This document discusses different treatment options for brain aneurysms, focusing on endovascular coiling. It describes what a brain aneurysm is, explains different treatment options including surgical clipping and endovascular coiling, and provides details on techniques for coiling such as balloon-assisted coiling and stent-assisted coiling. It also summarizes results from clinical trials comparing coiling to clipping, finding lower rates of death and dependency with endovascular coiling for both ruptured and unruptured aneurysms.